Spring for bicycle-saddles.



No. 684,350. l'Paumuul obi. 8,1901.

W.- unKEH. l y SPRING FOHBIGYZLE SADDLES.

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UNITED STATES PATENT OFFICE.

IVILLIAM I. BUNKER, OF LAGRANGE, ILLINOIS.

SPRlNG FOR BICYCLE-SADDLES.

SECIFCATIGN forming part 0f Letters Patent NO. 684,350, dated. October 8, 1901.

Application iiled March 13, 1899. Serial No. 708,907. (N0 111051310 To a/ZZ whom t may concern:

Be it known that I, WILLIAM I. BUNKER, a citizen of the United States, residing at Lagrange, in the county of Cook andvState of Illinois, have invented certain new and useful Improvements in Springs for Bicycle-Saddles, of which the following is a specification.

My invention relates to that class of springs which are adapted to be attached to bicyclesaddles and connected to the frame of a bicycle by means of a clip or similar mechanism.

The object of the invention is to provide a simple, economical, and efficient saddlespring; and the invention consists in the features and details of construction hereinafter described and claimed.

In the accompanying drawings, Figure l is a plan View of a saddle-spring constructed in accordance with my improvements; Fig. 2, a perspective view of the same, and Fig. 3 a side elevation of a saddle-spring.

In constructing a saddle-spring in accordance with my improvements I preferably take a piece of steel spring-wire andv bend it so as to form the two helical coils at the front portion thereof and the two helical coils b at or near the rear portion. I then bend the ends of it so as to provide loops c, which can'be used for the purpose of securing the spring to a saddle-plate by means of bolts, screws, or the like. The spring is then bent so as to form the loop d at the front portion thereof with the curved portions cl, that form a substantial enlarged opening d2, through which a third securing-bolt may be fastened. Will be noticed that when the spring is given its ultimate shape, as shown in the drawings, the front and rear loops c and d are at the upper portion of the helical coils, While the portions e, that connect the front and rear coils together, are at the lower portions of the helical coils and at each side of a central longitudinal line and the securing-loops c at the upper portion thereof.

The advantages incident to a spring constructed in accordance with my improvements are, rst, that the parts are made of one single piece of Wire; second, the greatest elasticity possible is obtained from a single piece of wire; third, the different bendings are' so arranged that the spring may be easily secured in position, and, fourth, the spring is very simple and economical to manufacture and efficient in operation.

I claiml. In a bicycle-saddle, a spring bent at its middle to form a loop, and comprising two limbs extending in a horizontal plane, approximately parallel with each other,and each bent to form vertical elastic coils between the front and rear portions of the saddle, substantially as described.

2. A saddle-spring support formed of a single piece of wire bent to have the two side bars of the support and front and rear coilsprings, each side bar having a coil-spring at the terminal point of each end, each front coilspring upwardly extended from its end of the bar and each rear coil-spring upwardly extended from its end of the bar With the two rear springs disconnected one from the other, substantially as described.

3. A saddle-support made from a single piece of metal and consisting of two side bars, each bar having at its front end and its rear end a cushioning coil-spring, and an integral elongated loop connecting said bars, extended forward from the front springs for the support of an extended saddle-nose or nose-plate and provided with a point of attachment for the saddle immediately in front of said springs, substantially as described.

NILLIAM I. BUNKER.

Witnesses:

THOMAS F. SHERIDAN, THOMAS B. MCGREGOR. 

